Growth of ultrafine CuCo2O4 nanoparticle on graphene with enhanced lithium storage properties

Jiang, Fei; Su, Qingmei; Li, Haojie; Yao, Libing; Deng, Huihui; Du, Gaohui

doi:10.1016/j.cej.2016.11.064

Cited by 44 publications

(26 citation statements)

References 46 publications

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“…In the first cathodic sweep, three reduction peaks were observed. The well‐defined and intense reduction peak at ≈0.58 V versus Li/Li + could be assigned to a solid electrolyte interface (SEI) layer formation, caused by electrolyte decomposition during the first discharge . The less intense peak at ≈0.84 V was attributed to the reduction of Cu 2+ and Co 2+ to metallic Cu and Co (with similar reduction potentials), respectively, in an amorphous Li 2 O matrix .…”

Section: Resultsmentioning

confidence: 95%

“…The weak peak at ≈1.2 V versus Li/Li + was due to the reduction of Co 3+ to Co 2+ . In the subsequent CV cycles, the aforementioned cathodic peak at ≈0.58 V versus Li/Li + disappeared because of the irreversible faradaic electrochemical reaction associated with the SEI layer formation on the electrode surface during the first discharge cycle, whereas the other other two peaks shifted toward higher potential values (one from ≈0.84 to ≈1.0 V and the other from ≈1.2 to ≈1.29 V) . In the corresponding anodic sweep, two broad oxidation peaks (down arrows) were observed at ≈1.45 and ≈2.20 V and could be assigned to the oxidation of metallic Cu and Co to, respectively, CuO and CoO → Co 3 O 4 .…”

Section: Resultsmentioning

confidence: 99%

“…Figure shows the initial five CV curves between 0.005 and 3.0 V versus Li/Li + for the various CuCo 2 O 4 anodes, at a scan rate of 0.1 mV s –1 , while the scan rate–dependent CV curves are shown in Figure S2, Supporting Information. The possible electrochemical reactions can be summarized as follows

{CuCo}_{2} {normalO}_{4} + {8 Li}^{+} + {8 e}^{-} \to Cu + 2 Co + 4 {Li}_{2} O

Cu + {Li}_{2} O \leftrightarrow CuO + {2 Li}^{+} {+ 2 e}^{-}

2 Co + {2 Li}_{2} O \leftrightarrow 2 CoO + {4 Li}^{+} {+ 4 e}^{-}

2 CoO + {2 / 3 Li}_{2} O \leftrightarrow {2 / 3 Co}_{3} {normalO}_{4} + {4 / 3 Li}^{+} + {4 / 3 e}^{-}

…”

Section: Resultsmentioning

confidence: 99%

“…The direct growth of self‐supported ternary transition metal oxides on current‐collecting substrates was recently explored to overcome the drawbacks of mixing active electrode materials with binders and conductive additives, and the anode materials showed enhanced endurance and fast discharge–charge processes; in particular, CuCo 2 O 4 (Figure ) has exhibited good Li + storage properties because both anions contribute to the faradaic redox mechanism for electrochemical energy storage . However, CuCo 2 O 4 ‐based anodes suffer from large volume change upon cycling, causing drastic capacity fading that results in a short discharge–charge cycle life.…”

Section: Introductionmentioning

confidence: 99%

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Morphology Engineering of Self‐Assembled Nanostructured CuCo₂O₄ Anodes for Lithium‐Ion Batteries

et al. 2019

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The electrochemical kinetics and output capacity of active electrode materials are significantly influenced by their surface structure. Herein, the template‐free morphological evolution of CuCo2O4 is reported, which is achieved by controlling the nucleation and growth rate during the hydrothermal process and evaluating its anode performance. The charge‐transfer resistance and specific surface area of the fabricated CuCo2O4 anode films are influenced by the viscosity of the solvent used. The optimized mesoporous nanosheet anode exhibits a high specific discharge capacity (1547 mAh g–1) at 0.1 A g–1 and an excellent restoring capability (≈91%); it retains 88% of the initial capacity with a coulombic efficiency of ≈99% even after 250 discharge–charge cycles. The superior lithium‐ion energy storage performance of this anode is due to its electrochemically favorable porous 2D morphology with large Brunauer–Emmett–Teller (BET) specific surface area and pore volume, resulting in enhanced Li+ storage and intercalation property.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

{CuCo}_{2} {normalO}_{4} + {8 Li}^{+} + {8 e}^{-} \to Cu + 2 Co + 4 {Li}_{2} O

Cu + {Li}_{2} O \leftrightarrow CuO + {2 Li}^{+} {+ 2 e}^{-}

2 Co + {2 Li}_{2} O \leftrightarrow 2 CoO + {4 Li}^{+} {+ 4 e}^{-}

2 CoO + {2 / 3 Li}_{2} O \leftrightarrow {2 / 3 Co}_{3} {normalO}_{4} + {4 / 3 Li}^{+} + {4 / 3 e}^{-}

…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphology Engineering of Self‐Assembled Nanostructured CuCo₂O₄ Anodes for Lithium‐Ion Batteries

et al. 2019

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“…Lou [26] synthesized NiCo 2 O 4 complex hollow spheres as anode material in lithium-ion battery and its specific capacity was 1400 mAh g −1 at 150 mA g −1 with great cycling stability. Jiang [32] reported CuCo 2 O 4 nanoparticle showed high reversible capacity of 1040 mAh g −1 at 0.1 C. Cao [33] designed ultrathin ZnCo 2 O 4 nanosheets for lithium anode with excellent long life (about 900 mAh g −1 after 200 cycles at 200 mA g −1 current density).…”

Section: Introductionmentioning

confidence: 99%

Nonstoichiometric Cu0.6Ni0.4Co2O4 Nanowires as an Anode Material for High Performance Lithium Storage

Jiang

Liao

et al. 2020

Nanomaterials

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Transition metal oxide is one of the most promising anode materials for lithium-ion batteries. Generally, the electrochemical property of transition metal oxides can be improved by optimizing their element components and controlling their nano-architecture. Herein, we designed nonstoichiometric Cu0.6Ni0.4Co2O4 nanowires for high performance lithium-ion storage. It is found that the specific capacity of Cu0.6Ni0.4Co2O4 nanowires remain 880 mAh g−1 after 50 cycles, exhibiting much better electrochemical performance than CuCo2O4 and NiCo2O4. After experiencing a large current charge and discharge state, the discharge capacity of Cu0.6Ni0.4Co2O4 nanowires recovers to 780 mAh g−1 at 50 mA g−1, which is ca. 88% of the initial capacity. The high electrochemical performance of Cu0.6Ni0.4Co2O4 nanowires is related to their better electronic conductivity and synergistic effect of metals. This work may provide a new strategy for the design of multicomponent transition metal oxides as anode materials for lithium-ion batteries.

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Origin of Fracture‐Resistance to Large Volume Change in Cu‐Substituted Co₃O₄ Electrodes

Liu

Yao

et al. 2017

Advanced Materials

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The electrode materials conducive to conversion reactions undergo large volume change in cycles which restrict their further development. It has been demonstrated that incorporation of a third element into metal oxides can improve the cycling stability while the mechanism remains unknown. Here, an in situ and ex situ electron microscopy investigation of structural evolutions of Cu-substituted Co O supplemented by first-principles calculations is reported to reveal the mechanism. An interconnected framework of ultrathin metallic copper formed provides a high conductivity backbone and cohesive support to accommodate the volume change and has a cube-on-cube orientation relationship with Li O. In charge, a portion of Cu metal is oxidized to CuO, which maintains a cube-on-cube orientation relationship with Cu. The Co metal and oxides remain as nanoclusters (less than 5 nm) thus active in subsequent cycles. This adaptive architecture accommodates the formation of Li O in the discharge cycle and underpins the catalytic activity of Li O decomposition in the charge cycle.

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Growth of ultrafine CuCo2O4 nanoparticle on graphene with enhanced lithium storage properties

Cited by 44 publications

References 46 publications

Morphology Engineering of Self‐Assembled Nanostructured CuCo₂O₄ Anodes for Lithium‐Ion Batteries

Morphology Engineering of Self‐Assembled Nanostructured CuCo₂O₄ Anodes for Lithium‐Ion Batteries

Nonstoichiometric Cu0.6Ni0.4Co2O4 Nanowires as an Anode Material for High Performance Lithium Storage

Origin of Fracture‐Resistance to Large Volume Change in Cu‐Substituted Co₃O₄ Electrodes

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Growth of ultrafine CuCo2O4 nanoparticle on graphene with enhanced lithium storage properties

Cited by 44 publications

References 46 publications

Morphology Engineering of Self‐Assembled Nanostructured CuCo2O4 Anodes for Lithium‐Ion Batteries

Morphology Engineering of Self‐Assembled Nanostructured CuCo2O4 Anodes for Lithium‐Ion Batteries

Nonstoichiometric Cu0.6Ni0.4Co2O4 Nanowires as an Anode Material for High Performance Lithium Storage

Origin of Fracture‐Resistance to Large Volume Change in Cu‐Substituted Co3O4 Electrodes

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Morphology Engineering of Self‐Assembled Nanostructured CuCo₂O₄ Anodes for Lithium‐Ion Batteries

Morphology Engineering of Self‐Assembled Nanostructured CuCo₂O₄ Anodes for Lithium‐Ion Batteries

Origin of Fracture‐Resistance to Large Volume Change in Cu‐Substituted Co₃O₄ Electrodes